Elevator



(N0 Modem 3 SheetsSheet, 1.

T. VAN KAN-NHL 4 ELEVATOR. No. 552,651] I Patented Jan. 7, 1896.

(No Model.) 3 Sheets-Sheet 2.

T. VAN KANNEL. BLEYATOR.

No. 552,651. Patented Jan. 7, 1896.

(No Model.) 3 Sheets-$119M". a.

T. VAN ,KANNEL. ELEVATOR.

PTO/552,651. Patented JanQV, 1896.

NITE STAT S ATENI Erica.

TI'IEQPI'IILUS VAN KANNEL, OF ROCKFORD, ILLINOIS.

E LEVATO RI.

SPECIFICATION forming part of Letters Patent No. 552,651, dated January 7, 1896.

Application filed August 2 9, 1 89 5.

T0 aZZ whom, it may concern: I

Be it known that I, THEOPHILUS VAN KAN- NEL, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented a new and useful Improvement in Elevators, of which the following is a specification.

My invention relates to an improvement in interlocking devices for the doors of elevatorcabs for interlocking the cab-door with the medium for controlling the elevator from the cab, as the lever or cable commonly provided for the purpose, to prevent the door from being opened or closed while the cab is in motion or until it is stopped, and, to prevent the cab from being started until its door shall be closed. To this end I provide, as the broad principle involved in my invention, a lever connected with the cab-door, by which to slide it back and forth for opening and closing, and an interlocking device between said lever and the operating-lever or other elevator-controlling medium on the cab, operating to prevent movement of the door without stopping the motion of the elevator.

My invention consists in the general construction of my improved interlocking mechanism; and it also consists in details of the construction thereof.

Referring to the accompanying drawings, Figure 1 is a vertical sectional view of an elevator-cab equipped with my improvement; Fig. 2, a face view of the door-operating lever; Fig. 3, a similar view of the elevator-controlling lever to which the shifting-re d is attached, and carrying the medium for interlocking with the door-lever; Fig. 4, a section taken at the line 4 on Fig. 1, viewed in the direction of the arrow and enlarged; Fig. 5, a view like that presented by Fig. 1, but showing a modification; Fig. 6, a view of the door-operating lever like that presented by Fig. 2; Fig. 7, a broken view in elevation of the interlocking connection between the door-operating lever and the lever for controlling the elevator from the cab in the modified construction represented by Fig. 5; Fig. 8, a section taken at the line 8 on Fig. 5, viewed in the direction of the arrow and enlarged; and Fig. 9, a view like that presented by Fig. 1, but showing a further modification adapting my improve- Serial No. 560,858. (No model.)

ment to be applied to the cable form of medium for controlling the elevator from the cab.

A is an elevator-cab of usual or any suitable construction adapting it to be lifted and lowered in a shaft, (not shown,) and B is the sliding door of the cab, which may also be of any usual or suitable construction. 0 is a lever formed at one end with a head 0', preferably of the shape illustrated, and provided with a flange r, extending part way about it from one side, concentric with the fulcrum as of the lever, which is supported on a pivotbearing fastened to the front inner side of the cab, and in the flange r is provided a slot r At its opposite end the lever O terminates in a handle q, and at that end it is connected pivotally with one end of a link p extending across the door (either entirely across, as

shown, or only part way) and pivotally connected therewith at its opposite end, as shown at 00. On the cab-wall to which the lever C is fulcrumed I provide, at opposite ends of the throw of the lever through a half-circle, the stops or rests 0 0..

D is a lever for controlling the elevator from the cab. It is fulcrumed at one end, as at n, Fig. 1, to the side of the cab, andcarries at its opposite end a handle a, and between its ends it carries a device for interlocking the lever D with the head 0" on the lever 0, shown as a segment on fastened on the lever I) and provided on its inner face with a segmental flange on having a slot m The leverD also carries the shifting-rod t commonly provided in electrically-operated elevators, and which therefore requires no particular description in the present connection.

In Fig. 5 the operating lever, denoted as Di and carrying a handle it, is shown as of bellcrank shape and fulcrumed at 0 below the floor, andthe interlocking medium with the lever C comprises a bar Z, pivoted at o to the end of the short arm of the lever D, and from which the shifting-rod 15 extends, the bar Z extending upward from its pivot through a slot 3 in the floor of the cab, and through a guide 5 on the cab-wall, across the flanged face of the head 1* of the lever C, and being provided with a flange or rib Z containing a slot Z According to the construction illustrated by Fig. 9, the medium for controlling the elevator from the cab is the ordinary cable D flanked by a stationary bearing 7c on the floor of the cab adjacent to the hole 1' therein, through which the cable passes, and a movable bearing 75 projecting from one side of a lever h, fulcrumed below the cab at o and extending thence upward through an opening t" in the cabfloor, being bent at its upper end to enter a recess or notch r in the outer end of the head 7' of the door-lever C, and carrying at its bent end a handle of. The bearings 7c and form a species of clutch.

The operation is as follows: \Vith the construction presented by Fig. 1., when the lever D is in the position to which it is brought when the cab has been stopped, and the lever C is in that to which it is brought when the cab-door is closed, the slot m in the flange m on the head on and the slot 7' in the flange r on the head 4" coincide, so that then the cab-door may be opened by tnrnin g the lever (J from the position in which it is shown to its opposite position of resting against the stop 0; but in so turning it the flange r enters the notch 171*, so that the controllinglever D cannot then be moved to start the cab in. motion until the lever C shall have been turned back to effect closure of the door B. Then, to start the cab, the lever D may be turned, thereby swinging the flange m of the head m into the slot 7' of the head 7', whereby the lever C may not be turned to open the cab-door until the lever D shall have been turned back to the position to which it is brought by stopping the elevator.

The same principle of operation prevails with the construction presented by Fig. 5, wherein when the cab is at a standstill the slots Z and 7' coincide, so that then either the lever C may be turned to open the cab-door, and thus lock the controlling-lever D against starting the elevator till the door shall have been closed, or the lever D may be turned to start the elevator, and thus lock the lever C against being turned to open the door till the cab shall have been brought to a standstill.

lVit-h the construction illustrated in Fig. 9 the purpose of the inventionnamely, that of preventing the cab-door from being opened or closed while the cab is in motion, or until it is stopped, and of preventing the cab from being'started until its door shall be closed is accomplished as follows: To open the cabdoor B from its closed position, the lever h must first be turned by its handle a in the direction to withdraw its bent upper end out of the notch r in the lever 0, whereby the clutch portion 7t grips the cable D and pro duces stoppage of the elevator-cab by pulling the cable in the direction of motion of the cab, and whereby the lever C is then released and may be turned on its fulcrum in opening the cab-door to permit such opening. ith the lever 0 thus turned the periphery of its head bears against the handle n of the turned lever 72, thus retaining the latter in its position of clutching the cable D and preventing the cab from being started until the door B is closed, whereby the lever C is brought to the position in which it is illustrated, wherein the bent end of the lever 72- may be introduced into the notch 0' and the clutch portion 7t" is accordingly freed from the cable.

hat I claim as new, and desire to secure by Letters Patent, is

1. In combination with an elevator-cab and its elevator-controlling medium, a lever connected with the cab-do0r for operating it, and an interlocking device between said lever and controlling medium, substantially as and for the purpose set forth.

2. In combination with an elevator-cab and its elevator-controlling medium, a lever fulcrumed on the cab and having a link-connection with the cab-door to open and close it by turning the lever, and an interlocking device between said lever and controlling medium, substantially as and for the purpose set forth.

3. In combination with an elevator-cab and its elevator-controlling medium, a lever fulcrumed on the cab and connected with the cab-door for operating it, a head on the lever provided with a flange having a slot, and a connection between said controlling medium and flanged head for interlocking with the latter, said connection having a flange provided with a slot, substantially as and for the purpose set forth.

4. In combination with an elevator-cab and its elevator-controlling medium, a lever fulcrumed on the cab and provided at one end with a head having a flange containing a slot, a link connecting said lever from its opposite end with the cab-door, and a connection between said controlling medium and flanged head for interlocking with the latter, said connection having a flange provided with a slot, substantially as and for the purpose set forth.

5. In combination with an elevator-cab and the elevator-controlling lever thereon, a lever fulcrumed 011 the cab and connected with the cab-door for operating it, a head on the lever provided with a flange concentric with the fulcrum and having a slot, and a head on said controlling lever provided with a flange having a slot and interlocking with the flanged head of said door-operating lever, substantially as and for the purpose set forth.

6. In combination with an elevator-cab and the elevator-controllin g lever thereon, a lever O fulcrumed on the cab and provided at one end with a head 1* having a flange 0" containing a slot r and concentric with the fulcrum, a link 2) connecting the lever C from its opposite end with the cab-door, stops 0 and 0 at opposite ends of the throw of the door-operating lever, and a head on said controlling lever, provided with a flange m containing a slot m and interlocking with the flanged head of said door-operating lever, substantially as and for the purpose set forth.

curved flange m having a slot m and interlocking with the flanged head of said dooroperating lever, substantially as and for the purpose set forth.

THEOPHILUS VAN KANNEL. In presence of FRANK SHELAIN, O. T. BRANTINGHAM. 

